OK, here are a few links:
http://www.wayfaring.info/2006/10/06/the-surreal-hotel-marques-de-riscal/
http://whatahotel.com/hotels/HotelMarquesdeRiscal.html?gclid=CMHxtsnYh5ECFQeVMAodVU8Q-Q
http://www.luxurytravelmagazine.com/hotels-resorts/details/hotel-marques-de-riscal-elciego-rioja-wine-region-spain.php
http://www.artisansofleisure.com/tour/Spain_tours_luxury_travel_9Historic.html
Hope this is useful......